Re: [PATCH(es)] graphics passthrough with VT-d

["Mr. Teo En Ming (Zhang Enming)" <enming.teo@asiasoftsea.net>]

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Dear Tim,

I am using onboard Intel GMA 4500 for my Dom 0 and nVidia Geforce 8400 
GS for passthrough to Windows XP HVM domU.

I believe the VGA BIOS in the physical memory region 0xC0000 to 0xC7FFF 
is the vga bios of onboard Intel graphics, and not my Geforce 8400 GS. 
Hence I would need to extract out the firmware file for my Geforce 8400 
GS card.

As for nvidia professional graphics cards, they are too expensive for me 
for home use.

-- 
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering) BEng(Hons)(Mechanical Engineering)
Technical Support Engineer
Information Technology Department
Asiasoft Online Pte Ltd
Tampines Central 1 #04-01 Tampines Plaza
Singapore 529541
Republic of Singapore
Mobile: +65-9648-9798
MSN: teoenming@hotmail.com
Alma Maters: Singapore Polytechnic, National University of Singapore



On 08/29/2009 12:10 AM, Tim Moore wrote:
>
> Teo,
>
> It looks like the patches that Wiedong has supplied already copy the 
> VGA bios from the card and re-execute it within the DomU, therefore 
> there should be no need to load it from a file.
>
> I think you will have trouble for 2 reasons:
>
> 1) Bios re-execution, these Nvidia cards do not like having the BIOS 
> re-executed (from memcpy or file)
>
> 2) the Base Address Registers (BARs) will require 1:1 mappings to the 
> real addresses, which these patches dont cater for
>
> If you want to make it work, you will need a card that works without 
> the 1:1 mapping and is more friendly to virtualisation.
>
> ie:
>
> http://www.nvidia.com/object/sli_multi_os.html
>
> (as Andrew Lyon describes)
>
> Dual Quadro FX 5800, 4800, and 3800 professional graphics boards
>
> Tm
>
> *From:* xen-devel-bounces@lists.xensource.com 
> [mailto:xen-devel-bounces@lists.xensource.com] *On Behalf Of *Mr. Teo 
> En Ming (Zhang Enming)
> *Sent:* 28 August 2009 16:55
> *To:* weidong.han@intel.com
> *Cc:* xen-devel@lists.xensource.com; 'Lin, Ben Y'; 'Kay, Allen M'; 
> 'Jean Guyader'; Keir.Fraser@eu.citrix.com; bengheng@eecs.umich.edu
> *Subject:* Re: [Xen-devel] [PATCH 2/2] graphics passthrough with VT-d
>
> Dear Weidong,
>
> A big big thanks for the vga passthrough patches for xen 
> 3.5-unstable!!! These are eagerly anticipated patches. As I did not 
> study computer science and computer architecture, I won't be able to 
> write those patches you guys at Intel wrote.
>
> I applied the following patches *xen-gfx-passthrough.patch 
> <http://lists.xensource.com/archives/html/xen-devel/2009-08/bincPiiAf0QWg.bin> 
> and qemu-gfx-passthrough.patch 
> <http://lists.xensource.com/archives/html/xen-devel/2009-08/binglLqkeq4Rj.bin> 
> to xen 3.5-unstable without issues.*
>
> Then I tried to apply the 3rd patch you provided at 
> http://lists.xensource.com/archives/html/xen-devel/2009-08/msg01047.html
>
> I saved the following code
>
> <CODE>
>
> diff -r 494be76c1ad9 tools/firmware/hvmloader/Makefile
> --- a/tools/firmware/hvmloader/Makefile Thu Aug 27 16:54:33 2009 +0800
> +++ b/tools/firmware/hvmloader/Makefile Thu Aug 27 17:22:01 2009 +0800
> @@ -50,6 +50,7 @@ roms.h: ../rombios/BIOS-bochs-latest ../
>   roms.h: ../rombios/BIOS-bochs-latest ../vgabios/VGABIOS-lgpl-latest.bin \
>      ../vgabios/VGABIOS-lgpl-latest.cirrus.bin ../etherboot/eb-roms.h
>      sh ./mkhex rombios ../rombios/BIOS-bochs-latest>  roms.h
> +   sh ./mkhex vgabios_pt ../vgabios/vgabios-pt.bin>>  roms.h
>      sh ./mkhex vgabios_stdvga ../vgabios/VGABIOS-lgpl-latest.bin>>  roms.h
>      sh ./mkhex vgabios_cirrusvga \
>          ../vgabios/VGABIOS-lgpl-latest.cirrus.bin>>  roms.h
> diff -r 494be76c1ad9 tools/firmware/hvmloader/hvmloader.c
> --- a/tools/firmware/hvmloader/hvmloader.c  Thu Aug 27 16:54:33 2009 +0800
> +++ b/tools/firmware/hvmloader/hvmloader.c  Thu Aug 27 17:23:00 2009 +0800
> @@ -688,9 +688,9 @@ int main(void)
>           vgabios_sz = round_option_rom(sizeof(vgabios_stdvga));
>           break;
>       case VGA_pt:
> -        printf("Loading Gfx Video BIOS from 0xC0000 ...\n");
> -        vgabios_sz =
> -            round_option_rom((*(uint8_t *)(VGABIOS_PHYSICAL_ADDRESS+2)) * 512);
> +         printf("Loading Gfx Video BIOS from file ...\n");
> +         memcpy((void *)VGABIOS_PHYSICAL_ADDRESS, vgabios_pt,
> sizeof(vgabios_pt));
> +         vgabios_sz = round_option_rom(sizeof(vgabios_pt));
>           break;
>       default:
>           printf("No emulated VGA adaptor ...\n");
> </CODE>
>   
> as intel-gfx-passthru-patch-3.patch and then I tried to apply the patch to xen 3.5-unstable. I got errors. I think it's because the 3rd patch you provided is incomplete.
>   
> Here's my patching process:
>   
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# find . -name vgabios
> ./tools/firmware/vgabios
> ./.hg/store/data/tools/firmware/vgabios
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# cp ~enming/vgabios-pt.bin tools/firmware/vgabios/
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# ls tools/firmware/vgabios/
> biossums.c  clext.c      Makefile  TODO                 vbe.h            vgabios.h       vgatables.h
> BUGS        COPYING      Notes     vbe.c                vbetables-gen.c  vgabios-pt.bin
> ChangeLog   dataseghack  README    vbe_display_api.txt  vgabios.c        vgafonts.h
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# pwd
> /usr/src/xen-unstable.hg-vgapt
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# wgethttp://lists.xensource.com/archives/html/xen-devel/2009-08/bincPiiAf0QWg.bin
> --2009-08-28 23:18:21--http://lists.xensource.com/archives/html/xen-devel/2009-08/bincPiiAf0QWg.bin
> Resolving lists.xensource.com... 70.42.241.110
> Connecting to lists.xensource.com|70.42.241.110|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 12565 (12K) [application/octet-stream]
> Saving to: `bincPiiAf0QWg.bin'
>   
> 100%[======================================================================>] 12,565      30.7K/s   in 0.4s
>   
> 2009-08-28 23:18:22 (30.7 KB/s) - `bincPiiAf0QWg.bin' saved [12565/12565]
>   
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# mv bincPiiAf0QWg.bin xen-gfx-passthrough.patch
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# vi xen-gfx-passthrough.patch
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# patch<  xen-gfx-passthrough.patch
> can't find file to patch at input line 4
> Perhaps you should have used the -p or --strip option?
> The text leading up to this was:
> --------------------------
> |diff -r 5d7e7a250267 tools/firmware/hvmloader/config.h
> |--- a/tools/firmware/hvmloader/config.h      Wed Aug 26 18:28:44 2009 +0800
> |+++ b/tools/firmware/hvmloader/config.h      Thu Aug 27 16:54:24 2009 +0800
> --------------------------
> File to patch: ^C
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# ex xen-gfx-passthrough.patch
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# patch -p1<  xen-gfx-passthrough.patch
> patching file tools/firmware/hvmloader/config.h
> patching file tools/firmware/hvmloader/hvmloader.c
> patching file tools/libxc/ia64/xc_ia64_hvm_build.c
> patching file tools/libxc/xc_hvm_build.c
> patching file tools/libxc/xc_linux.c
> patching file tools/libxc/xenctrl.h
> patching file tools/libxc/xenguest.h
> patching file tools/python/xen/lowlevel/xc/xc.c
> patching file tools/python/xen/xend/XendConfig.py
> Hunk #1 succeeded at 174 (offset -1 lines).
> patching file tools/python/xen/xend/image.py
> Hunk #1 succeeded at 780 (offset -6 lines).
> Hunk #3 succeeded at 895 (offset -6 lines).
> patching file tools/python/xen/xm/create.py
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# wgethttp://lists.xensource.com/archives/html/xen-devel/2009-08/binglLqkeq4Rj.bin
> --2009-08-28 23:21:35--http://lists.xensource.com/archives/html/xen-devel/2009-08/binglLqkeq4Rj.bin
> Resolving lists.xensource.com... 70.42.241.110
> Connecting to lists.xensource.com|70.42.241.110|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 9841 (9.6K) [application/octet-stream]
> Saving to: `binglLqkeq4Rj.bin'
>   
> 100%[======================================================================>] 9,841       24.3K/s   in 0.4s
>   
> 2009-08-28 23:21:36 (24.3 KB/s) - `binglLqkeq4Rj.bin' saved [9841/9841]
>   
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# mv binglLqkeq4Rj.bin qemu-gfx-passthrough.patch
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# vi qemu-gfx-passthrough.patch
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# find . -name hw
> ./tools/ioemu-remote/hw
> ./.hg/store/data/tools/ioemu/hw
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# mv qemu-gfx-passthrough.patch tools/ioemu-remote/
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# cd tools/ioemu-remote/
> [root@fedora11-x86-64-host ioemu-remote]# patch -p1<  qemu-
> qemu-aio.h                  qemu-img.c                  qemu-sockets.c
> qemu-binfmt-conf.sh         qemu-img.texi               qemu-tech.texi
> qemu-char.c                 qemu-lock.h                 qemu-timer.h
> qemu-char.h                 qemu-log.h                  qemu-tool.c
> qemu-common.h               qemu-malloc.c               qemu-xen.h
> qemu-doc.texi               qemu-nbd.c
> qemu-gfx-passthrough.patch  qemu-nbd.texi
> [root@fedora11-x86-64-host ioemu-remote]# patch -p1<  qemu-gfx-passthrough.patch
> patching file hw/pass-through.c
> patching file hw/pass-through.h
> patching file hw/pc.c
> patching file vl.c
> [root@fedora11-x86-64-host ioemu-remote]# cd ..
> [root@fedora11-x86-64-host tools]# cd ..
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# vi intel-gfx-passthru-patch-3.patch
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# patch -p1<  intel-gfx-passthru-patch-3.patch
> patching file tools/firmware/hvmloader/Makefile
> Hunk #1 FAILED at 50.
> 1 out of 1 hunk FAILED -- saving rejects to file tools/firmware/hvmloader/Makefile.rej
> patching file tools/firmware/hvmloader/hvmloader.c
> patch: **** malformed patch at line 24: sizeof(vgabios_pt));
>   
> [root@fedora11-x86-64-host xen-unstable.hg-vgapt]# vi intel-gfx-passthru-patch-3.patch
>   
> For everybody's convenience, I have attached intel-gfx-passthru-patch-3.patch and the firmware for my nVidia GeForce 8400 GS PCI Express x16 graphics card in this email.
>   
> Please help me complete intel-gfx-passthru-patch-3.patch as I really need it.
>   
> Thank you very much!!!
> -- 
> Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics Engineering) BEng(Hons)(Mechanical Engineering)
> Technical Support Engineer
> Information Technology Department
> Asiasoft Online Pte Ltd
> Tampines Central 1 #04-01 Tampines Plaza
> Singapore 529541
> Republic of Singapore
> Mobile: +65-9648-9798
> MSN:teoenming@hotmail.com  <mailto:teoenming@hotmail.com>
> Alma Maters: Singapore Polytechnic, National University of Singapore
>
>     This patch supports basic gfx passthrough on QEMU:
>
>        - disable emulated VGA adpater if there is passthroughed gfx
>
>        - register/unregister legacy VGA I/O ports and MMIOs for passthroughed gfx
>
>       
>
>     Signed-off-by: Ben Lin<ben.y.lin@intel.com>  <mailto:ben.y.lin@intel.com>
>
>     Signed-off-by: Weidong Han<weidong.han@intel.com>  <mailto:weidong.han@intel.com>
>
>     No virus found in this incoming message.
>
>     Checked by AVG -www.avg.com  <http://www.avg.com>  
>
>     Version: 8.5.409 / Virus Database: 270.13.69/2328 - Release Date: 08/27/09
>
>     18:02:00
>
>       
>
>     No virus found in this outgoing message.
>
>     Checked by AVG -www.avg.com  <http://www.avg.com>  
>
>     Version: 8.5.409 / Virus Database: 270.13.71/2330 - Release Date: 08/27/09
>
>     18:02:00
>
>        
>
>       
>
>     ------------------------------------------------------------------------
>
>
>          
>
>       
>
>     _______________________________________________
>
>     Xen-devel mailing list
>
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>
>     http://lists.xensource.com/xen-devel
>
>        
>
> ------------------------------------------------------------------------
>
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>    



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